Your E-mail and Presentation "Machining features and Machinin g Process Features"

[Pascal Huau]

Martin,


Although I don't want to interfere in this in-US debate, may-be a way to
solve the issue about pre-eminence of AP238 on AP213 ed2 is to not delay any
more the NWI approval procedure for AP238.
Otherwise, if an NWI for AP213 ed2 is launched and approved, you might have
to renumber the documents you have already created.

Regards,
Pascal Huau
Association GOSET
107,111 avenue Clemenceau
92000 Nanterre
France

----- Original Message -----
From: "Martin Hardwick" <hardwick at steptools.com>
To: "Jesse L. Crusey" <crusey at scra.org>; "Alan Crawford" <ALC at lsc.co.uk>;
"'chiaki sakamoto'" <chiaki_sakamoto at keg.komatsu.co.jp>; "Friedrich
Glantschnig" <fglantschnig at swissonline.ch>
Cc: "Alan Crawford" <ALC at lsc.co.uk>; "David Loffredo"
<loffredo at steptools.com>; "Frederick Proctor" <frederick.proctor at nist.gov>;
"Len Slovensky(AP224)" <slovensky at scra.org>; "Suk-Hwan SUH"
<shs at postech.ac.kr>; "Jochen Wolf" <j.wolf at wzl.rwth-aachen.de>; "Peter
Mueller" <peter.mueller at erlf.siemens.de>; "Yong Tak Hyun"
<hyt at wzl.rwth-aachen.de>; "Stefan Heusinger"
<stefan.heusinger at isw.uni-stuttgart.de>; <kisinami at coin.eng.hokudai.ac.jp>;
<step-manufacturing at steptools.com>
Sent: Friday, January 11, 2002 4:07 PM
Subject: RE: Your E-mail and Presentation "Machining features and Machinin g
Process Features"


>
>
> Jesse,
>
> AP-238 is used to exchange data between process planning (aka CAM systems)
> and CNC systems. For a CNC system AP-238 is the new input replacing the
> very old RS274D (G code) standard.
>
> Advantages of AP-238 as an input to the CNC include:
> * 3D geometry
> * Features (as defined in AP-224)
> * Sequencing language for operations that allows nested, conditional and
>   concurrent operations
> * Geometric (AIC 519) and parametric tolerances
> * Tool requirements (so the CNC can pick best available tool)
>
> There has been a tremendous effort in SC1 over the last 5 years to get
> International Consensus on the information requirements for AP-238.
> They are defined in ISO 14649 which is now at FDIS.
>
> In my view AP-213 has been sitting on the shelf for 5+ years because
> very few systems want to write AP-213 data and no systems want to read
> this data.
>
> I am very scared that the new AP-213 will try to become relevant by
> being an alternative method for exchanging data between CAM and CNC
> systems. Someone is already calling the new AP-213 STEP-NC.
> The Army has been told it is STEP-NC and so has Focus Hope.
>
> This will hurt the International consensus painfully built
> by SC1, and open Pandora's box because if one team is allowed to
> define a redundant manufacturing AP for CAM to CNC exchange then
> any group should be allowed to do so.
>
> Martin Hardwick
>